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Fault impedance calculation as autotransformer tab change in traction power supply system

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3 Author(s)
Joorak Kim ; Dept. of Electr. Power Supply, Korea Railroad Res. Inst., Uiwang, South Korea ; Moonseob Han ; Sang-Hoon Chang

AC traction power supply system has adopted autotransformer (AT) feeding method. This system has an advantage as long feeding distance. However, the countermeasure for voltage drop should be considered, because load capacity grows larger and headway grows shorter in recent electric railway system. This paper proposes the improved system configuration to enhance voltage drop in ac railway system without additional power electronic device and investigates fault analysis as autotransformer tap change.

Published in:

Modern Electric Power Systems (MEPS), 2010 Proceedings of the International Symposium

Date of Conference:

20-22 Sept. 2010